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Earnings Per Share (CenterPoint Energy) (Tables)
 3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table reconciles numerators and denominators of CenterPoint Energy’s basic and diluted earnings per common share. Basic earnings per common share is determined by dividing Income available to common shareholders - basic by the Weighted average common shares outstanding - basic for the applicable period. Diluted earnings per common share is determined by the inclusion of potentially dilutive common stock equivalent shares that may occur if securities to issue Common Stock were exercised or converted into Common Stock.
 
 
Three Months Ended March 31,
 
 
2020
 
2019
 
 
 
Continuing Operations Numerator:
 
 
 
 
Income (loss) from continuing operations
 
$
(1,053
)
 
$
143

Less: Preferred stock dividend requirement
 
29

 
29

Income (loss) available to common shareholders - basic
 
(1,082
)
 
114

Add back: Series B Preferred Stock dividend (2)
 
—

 
—

Income (loss) available to common shareholders from continuing operations - diluted
 
$
(1,082
)
 
$
114

Discontinued Operations Numerator:
 
 
 
 
Income (loss) from discontinued operations
 
$
(146
)
 
$
26

 
 
 
 
 
Denominator:
 
 
 
 
Weighted average common shares outstanding - basic
 
502,388,000

 
501,521,000

Plus: Incremental shares from assumed conversions:
 
 
 
 
Restricted stock (1)
 
—

 
2,423,000

Series B Preferred Stock (2)
 
—

 
—

Weighted average common shares outstanding - diluted
 
502,388,000

 
503,944,000

 
 
 
 
 
Earnings (loss) per common share:
 
 
 
 
Basic earnings (loss) per common share - continuing operations
 
$
(2.15
)
 
$
0.23

Basic earnings (loss)per common share - discontinued operations
 
(0.29
)
 
0.05

Basic Earnings (Loss) Per Common Share
 
$
(2.44
)
 
$
0.28

 
 
 
 
 
Diluted earnings (loss) per common share - continuing operations
 
$
(2.15
)
 
$
0.23

Diluted earnings (loss) per common share - discontinued operations
 
(0.29
)
 
0.05

Diluted Earnings (Loss) Per Common Share
 
$
(2.44
)
 
$
0.28




(1)
2,567,000 incremental shares from assumed conversions of restricted stock have not been included in the computation of diluted earnings (loss) per share for the three months ended March 31, 2020, as their inclusion would be anti-dilutive.

(2)
The potentially dilutive impact from Series B Preferred Stock applies the if-converted method in calculating diluted earnings per common share. Under this method, diluted earnings per common share is adjusted for the more dilutive effect of the Series B Preferred Stock as a result of either its accumulated dividend for the period in the numerator or the assumed-converted common share equivalent in the denominator. The computation of diluted earnings per common share outstanding for the three months ended March 31, 2020 and 2019 excludes Series B Preferred Stock dividends of $17 million and $17 million, respectively, and 35,923,000 and 34,354,000 potentially dilutive shares, respectively, because to include them would be anti-dilutive. However, these could be potentially dilutive in the future.